Apr 23, 2013 1:40am PDT
afford an attorney, he replied no. among the charges, 19-year-old suspect, dzhokhar tsarnaev faces one count of using a weapon of mass destruction. which carries a potential maximum sentence of death. we've learned despite the injury to his neck, he is cooperating with investigators, writing his answers to at least some of their questions. sources tell abc news, among the details he has provided is that he and his brother learned how to make bombs from the internet. >> it was his brother, the primary motivating force for him to become radicalized. why did they end up doing what they did on that day? >> reporter: much of the investigation is still focused on his deceased 26-year-old brother tamerlan. examining his life, his recent trip back to russia, as some question if the fbi did enough to monitor him after they questioned him two years ago. >> they investigated it thoroughly and did not find terrorist activity domestic or foreign. >> reporter: the street where two bombs killed three people and injured more than 200 others is handed over from the fbi to the city of boston for the ong
Apr 22, 2013 7:00am PDT
a description of a still unreleased fbi video. according to those familiar with what it shows, dzhokhar tsarnaev can be seen removing his backpack at the spot where the second bomb was placed, and acting very differently from those around him when e first bomb blew up. >> this suspect took the backpack off, put it down, did not react when the first explosion went off, and then moved away from the backpack in time for the second explosion. >> federal officials say in the hours after the fbi released photos of the bombing suspects thursday night, investigators had not yet matched any names to their pictures and, in fact, did not even have the tsarnaev brothers in any terrorist data base. only after the older brother was killed in the late night shootout in watertown were agents able to check his fingerprints and put actual names to their case. fbi agents are seeking to interview all the family members and friends of the two brothers, including the wife of the older one, tamerlan. her lawyer says he is talking to federal authorities about how to proceed. matt? >> pete williams, thank you very much.